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Math Help - Zero Factor Property HELP

  1. #1
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    Zero Factor Property HELP

    So were on the chapter where we factor polynomials by reversing the process and using zero factor property. Here are the questions with my answers...can someone check for me??

    1. 12x^2=8x

    12x^2-8x=0
    4x(3x-2)=0

    ANSWER= x=0 x=2/3

    2. x(3x-2)-7(3x-2)=0

    (x-7)(3x-2)=0
    x-7=0 3x-2=0

    ANSWER= x=7 x=2/3

    3. x(x+9)=2(x+9)
    x(x+9)-2(x+9)=0
    (x-2)(x+9)=0

    ANSWER= x=2 x=-9

    Did I do these correct?
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  2. #2
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    Quote Originally Posted by seders99 View Post
    So were on the chapter where we factor polynomials by reversing the process and using zero factor property. Here are the questions with my answers...can someone check for me??

    1. 12x^2=8x

    12x^2-8x=0
    4x(3x-2)=0

    ANSWER= x=0 x=2/3

    2. x(3x-2)-7(3x-2)=0

    (x-7)(3x-2)=0
    x-7=0 3x-2=0

    ANSWER= x=7 x=2/3

    3. x(x+9)=2(x+9)
    x(x+9)-2(x+9)=0
    (x-2)(x+9)=0

    ANSWER= x=2 x=-9

    Did I do these correct?
    They look good to me
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